Evidence map›Paper›PMID 35574554›Full record

ArticleFrontiers in surgery2022

The Learning Curve of Unilateral Biportal Endoscopic (UBE) Spinal Surgery by CUSUM Analysis.

Lei Chen, Bin Zhu, Hua-Zhang Zhong, Yi-Guo Wang, Yi-Song Sun, Qi-Fei Wang, Jian-Jun Liu, Da-Sheng Tian, Jue-Hua Jing

Abstract read
In one paragraph

Article in Frontiers in surgery, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed, 6 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

47 citing papers in PubMed, 6 syntheses or guidelines pooled it.

  1. Learning curve insights in Unilateral Biportal Endoscopic (UBE) spinal procedures: proficiency cutoffs and the impact on efficiency and complications.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2025
    Pooled it
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  4. Unilateral biportal endoscopic discectomy versus microdiscectomy for lumbar disc herniation: a systematic review and meta-analysis.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2024
    Pooled it
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  7. Trial
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  9. Risk factors for poor functional outcomes at one year in biportal endoscopic spine surgery for lumbar spinal stenosis.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2026
    Article
  10. [Impact of surgeon's dominant hand-side consistency with surgical approach on operational efficiency of unilateral biportal endoscopic lumbar discectomy: a prospective cohort study].Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery · 2026
    Article
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  13. Protection of the ligamentum flavum reduces epidural fibrosis formation in endoscopic lumbar discectomy.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Lei ChenDepartment of Orthopedics, The Second Hospital of Anhui Medical University, Hefei, China.
Bin ZhuDepartment of Orthopedics, The Second Hospital of Anhui Medical University, Hefei, China.
Hua-Zhang ZhongDepartment of Orthopedics, The Second Hospital of Anhui Medical University, Hefei, China.
Yi-Guo WangDepartment of Orthopedics, The Second Hospital of Anhui Medical University, Hefei, China.
Yi-Song SunDepartment of Orthopedics, The Second Hospital of Anhui Medical University, Hefei, China.
Qi-Fei WangDepartment of Orthopedics, The Second Hospital of Anhui Medical University, Hefei, China.
Jian-Jun LiuDepartment of Orthopedics, The Second Hospital of Anhui Medical University, Hefei, China.
Da-Sheng TianDepartment of Orthopedics, The Second Hospital of Anhui Medical University, Hefei, China.
Jue-Hua JingDepartment of Orthopedics, The Second Hospital of Anhui Medical University, Hefei, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Objective: To assess the learning curve of the unilateral biportal endoscopic (UBE) technique for the treatment of single-level lumbar disc herniation by cumulative summation (CUSUM) method analysis. Methods: A retrospective analysis was conducted to assess 97 patients' general condition, operation time, complications, and curative effect of single segmental UBE surgery performed by a spinal surgeon in his early stage of this technique. The learning curve of operation time was studied using a CUSUM method, and the cut-off point of the learning curve was obtained. Results: The operation time was 30 - 241(97.9 ± 34.7) min. The visual analog scale score of lower limb pain decreased from 5.75 ± 0.81 before the operation to 0.39 ± 0.28 at the last follow-up ( Conclusions: About 24 cases of single segmental UBE operation are needed to master the UBE technique.

Indexed as

cumulative summationlearning curvelumbar disc herniationoperative timeunilateral biportal endoscopic spinal surgery

Identifiers

PMID35574554
PMCPMC9099005

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.